Reinforced pump-casing



R. H. ALDRICH. REINFORCED PUMP CASING. APPLICATION FILED MAR. 22. 1919. RENEWED NOV. 14,1919.

1,327,512, Patented Jan. 6, 1920.

ATTORNEXS UNITED STATES PATENT OFFICE.

ROSCOE H. ALDRICH, OF ALLENTOWN, PENNSYLVANIA, ASSIGNOR TO ALDRICH IUM]? COMPANY, OF ALLENTOWN, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

REINFORCED PUMP-CASING.

Specification of Letters Patent.

Patented Jan. 6, 1920.

Application filed March 22, 1919, Serial No. 284,245. Renewed November 14, 1919. Serial No. 338,114.

To aZZ whom it may concern:

Be it known that I, Rosoon H. ALDRIcH, a citizen of the United States, and a resident of Allentown, in the county of Lehigh and State of Pennsylvania, have invented a new and Improved Reinforced Pump-Casing, of which the following is a full, clear, and exact description.

The invention relates to pump casings having a valve chamber provided with tWo or more entrance openings, and its object is to provide a new and improved cast metal pump casing which is reinforced at the bridge piece intermediate adjacent entrance openings of the valve chamber. Another object is to provide a valve chamber of the proper area to accommodate two or more valves and at the same time permit of reducing the width of the valve chamber and. consequently that of the pump to a minilllllIlI.

lVith these and other objects in view, the invention consists of certain novel features of construction, as hereinafter shown and described and then specifically pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a plan viewof thereinforced pump casing;

Fig. 2 is a side elevation of the same;

Fig. 3 is a sectional side elevation of the same on the line 33 of Fig. 1; and

Fig. 4 is a cross section of the same on the line 4-4 of Fig. 1. p

The pump casing 10 is made of cast iron or of similar cast metal and is provided with a valve chamber 11 adapted to contain two or more valves (not shown). In order to give proper access to these valves the chamber 11 is provided in its top with two openings 12 and 13 normally closed by suitable caps 14, 15 screwed or otherwise secured in position on the top of the chamber 11. The entrance openings 12 and 13 are separated by a transverse bridge piece 20 integral with the sides 21 and 22 of the casing 10, and in this bridge piece 20 is formed a. transverse opening 23 into which fits and through which extends a bolt 2% preferably made of steel or other material having a tensile strength considerably in excess of that of the material of which the pump casing 10 is made. The head of the bolt 24 abuts against the outer face of the side 21 while the nut 26 screwing on the other end of the bolt 24; abuts against the outer face of the side 22, and this nut is screwed up sufficiently tight to place the bolt 24 under tension. It will be noticed that the bolt 2% greatly reinforces the bridge piece 20 as the bolt is of greater tensile strength than the material removed by boring the hole 23, and as this bolt is held under tension it prevents the casing from unduly spreading and renders the casing sufficiently strong to readily withstand the jars and other vibrations incident to the running of the pump by the seating or unseating of the valves thereof.

It will further be noticed that by providing the valve chamber 11 with a plurality of valves arranged side by side a large pumping area is obtained without increasing the width of the pump casing and the pump casing is greatly reinforced by the use of the bolt 24, as above described.

Having thus described my invention, I claim as new and desire to secure by Let-- ters Patent 1. A cast metal pump casing having a valve chamber provided with a plurality of entrance openings, adjacent openings being separated by a bridge piece integral with the opposite walls of the casing and provided with a transverse opening extending through the said Walls, and a reinforcing member of greater tensile strength than the material of which the pump casing is made, the said reinforcing member fitting into and extending through the said opening and engaging the outer faces of the said walls of the easing, the said reinforcing member, being under tension. e

2. A cast metal pump casing having a valve chamber provided with a plurality of entrance openings, adjacent openings being separated by a bridge piece integral with the opposite walls of the casing and provided with a transverse opening extending through the said Walls, and a bolt of a material of greater tensile strength than that of which the said casing is made, the said bolt fitting into and extending through the said opening, the head and nut of the bolt engaging the outer faces of the said walls, and the said nut being screwed up to hold the bolt under tension.

ROSCOE H. ALDRICH. 

